Bank scraping instrumentality for carrying scrapers



July 5, 1949. P. ZAKEL BANK SCRAPING INSTRUMENTALITIES FOR CARRYINGSCRAPERS Original Filed July 10, 1945 V/Al INVENTOR Pea Z Zeke!ATTORNEYS Patented July 5, 1949 BANK SCRAPING INSTRUMENTALITY FORCARRYING SCRAPERS Paul Zakel, Stockton, Calif.

Original application July 10, 1945, Serial No. 604,211. Divided and thisapplication June 28, 1947, Serial No. 757,877

1 Claim. 1

This invention relates in general to earth working machines, and inparticular the invention embraces improvements in carrying scrapers,especially of the type shown in the J. S. Walch U. S. Patent No.2,179,532, dated November 14, 1939.

This application is a division of application, Serial No. 604,211, filedJuly 10, 1945, now Patent No. 2,425,664 dated August 12, 1947.

The object of the invention is to provide, on opposite sides of thebowl, upstanding laterally projectin travelling blades for scrapingsides of banks or the like; such blades also moving coincidentally withthe movable bottom of the shovel plate and functioning as guards for theforward end of the power cylinders mounted on the sides of the bowl toactuate such movable bottom or shovel plate.

These objects are accomplished by means of such structure and relativearrangement of parts as will fully appear by a perusal of the followingspecification and claim.

In the drawings:

Figure 1 is a side elevation of a carrying scraper embodying the presentinvention.

Figure 2 is a fragmentary longitudinal elevation, partly broken away,showing the shovel plate and blades advanced.

Figure 3 is a fragmentary sectional plan on line 3-3 of Fig. 1.

Referring now more particularly to the characters of reference on thedrawings, the scraper comprises a box-like bowl, indicated generally atl, and which bowl includes elongated but rectangular side plates 2connected at the back by means including cross beams 3. At the front theside plates are connected by a cross plate 4 extending about half waydown from the top.

At the forward end, adjacent the top and centrally thereof, the bowl Iis fixed in connection with a forwardly projecting, rigid draft neck 5.At its forward end the draft neck 5 is coupled to the rear end of atractor 6 in any desired manner, and at its rear end the bowl issupported on ground engaging wheels 1.

Suitable means are provided for raising and lowering the front and rearends of the scraper bowl. These, however, form no part of the presentinvention and are, therefore, not described but would be preferably thatstructure shown and described in said application, Serial No. 604,211.

The bowl I also includes a bottom plate 8 which extends forwardly fromthe rear end of said bowl to a termination intermediate the ends thereofin a short downwardly sloping apron 9. This bottom plate 8, and theadjacent portions of the side plates 2, form a fixed dirt retainingportion of the bowl. Disposed at a level immediately below the apron 9is a longitudinally movable bottom or shovel plate Ill which terminatesat its forward end in a downwardly sloping scraping or earth diggingblade H which extends the full width of the bowl. The unit of plate l0and blade It may be termed the movable bottom or shovel plate of theimplement.

The plates 8 and II] are substantially the same length, and the shovelplate It] is mounted for sliding movement from a retracted positionbeneath the bottom plate 8, at which time the forward end portion of thebowl is bottomless, to an advanced position, as shown in Fig. 2, toprovide a bottom for said forward portion of the bowl. The shovel plateIt] is mounted for such movement as follows:

At its side edges the shovel plate I0 is formed with upturned flanges l2which ride outside the side plates 2. Said flanges are connected, atopposite ends, by upstanding suspension plates l3 attached, at theirupper ends, to horizontal,

longitudinally movable rails I4 carried in guide channels [5 fixed onand extending along the side plates 2. Fluid pressure actuated powercylinders l6 are disposed on opposite sides of the bowl I and areconnected at one end to the cross beam 3. The operating piston rods llof these cylinders are connected to the backs of vertically upstanding,laterally projecting, and forwardly inclined scraper blades [8. Thusupon operation of the cylinders IS the piston rods [1 forcefully movethe blades l8 and the shovel plate It forwardly or backwardly. Theseprojecting blades I8 are useful for the dual purpose of trimming thesides of banks or the like upon forward movement of the scraper and,being ahead of the power cylinders I 6 and piston rods l1, they also actas forward guards to prevent these latter ends from being injured bypossible contact with the banks or other obstructions.

From the foregoing description it will be readily seen that there hasbeen produced such a device as substantially fulfills the objects of theinvention as set forth herein.

While this specification sets forth in detail the present and preferredconstruction of the device, still in practice such deviations from suchdetail may be resorted to as do not form a departure from the spirit ofthe invention, as defined by the appended claim.

Having thus described the invention, the fol- 3 lowing is claimed as newand useful, and upon which Letters Patent is desired:

In combination with a scraper which includes a wheel mounted body havingside plates, a fixed plate covering part of the bottom of the body, anda movable plate operable to be moved to selectively cover or uncover thebalance of the bottom of the body; a pair of vertically upstanding,laterally projecting and forwardly inclined scraper blades fixed to themovable bottom plate and lying adjacent the outside of the side plates,power means fixed to the side plates back of the blades, and push rodsconnected with the power means and the back of the blades, the powermeans being operable to effect movement of the rods to impart movementto the blades and movable bottom plate.

PAUL ZAKEL.

REFERENCES CITED The following referenlces are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 514,645 Davy Feb. 13, 18942,004,637 Schauer June 11, 1935 2,179,532 Walch Nov. 14, 1939

